PROXIMATE COMPOSITION AND PHYTOCHEMICAL SCREENING OF TOASTED SOYABEAN HULL

Abstract

Raw soyabean hull were obtained from soyabean processing industry in Ibadan, toasted and milled. Proximate composition (%) and phytochemical screening of the hulls were determined using standard procedures. Dry matter, crude protein, crude fibre, ether extract and ash content of the toasted soyabean hull determined were 89.50%, 31.75%, 14.50%, 8.70% and 22.19% respectively. Tannin, protease inhibitors, haemagglutinin and cyanogenic glycosides were 0.04%, 1.84mg/kg, 11.24Hu/g and 0.27mg/kg respectively. The results of proximate composition showed that toasted soyabean hull contains a very high nutritive value and the phytochemical screening revealed that the toasted soyabean hull have low levels of all the constituents assayed. This may be as a result of detoxification method (i.e toasting) that perhaps have reduced the constituents to a non-toxic level.